How to Convert Document Formats in Ubuntu / Debian Linux : unoconv

unoconv converts between any document format that OpenOffice understands.

It supports  document formats like Open Document Format (.odt), MS Word (.doc), MS Office Open/MS OOXML (.xml),LaTeX 2e (.ltx), pdf, HTML, XHTML, RTF, Docbook (.xml), and more.

 It also supports image files JPG, BMP,  GIF, PNG and more
 unoconv supports Spreadsheet file formats also

Requirements
unoconv is written in python. It needs a recent LibreOffice or OpenOffice with UNO bindings.

It Supports OpenOffice on Linux, Windows and MacOSX

How to install unoconv in ubuntu / debian Linux

$ sudo apt-get install unoconv

Usage

it is a command line utility. read man page for more details

    unoconv -f pdf your-document.odt
    unoconv -f doc your-document.odt
    unoconv -f xsl your-spreadsheet.csv
    unoconv -f jpg your-image.png